Siemens SINAMICS S120 - Page 86

Motor components
6.4 Brake resistances (armature short-circuit braking)
Synchronous Motors 1FK7
86 Configuration Manual, (PFK7S), Edition 12.2006, 6SN1197-0AD16-0BP1
Notice
When determining the run-on distance, then, for example, the friction (taken into account as
allowance in M
B
)of the mechanical transmission elements and the switching delay times of
the contactors must be taken into consideration. In order to prevent mechanical damage,
mechanical end stops should be provided at the end of the absolute traversing range of the
machine axes.
0
EURSW
0
EUUPV
Q
1
6SHHGQ
0
EU
ZLWKH[WHUQDOEUDNHUHVLVWDQFH ZLWKRXWH[WHUQDOEUDNHUHVLVWDQFH
0
EURSW
0
EUUPV
Q
1

0
EU

6SHHGQ
,
EUUPV
Q
1

,
EU
Q
1
6SHHGQ
&RDVWLQJGRZQWLPHW
Q
1

Q1

&RDVWLQJGRZQWLPHW
6SHHGQ
6SHHGQ 6SHHGQ

,EUUPV
,EU
Figure 6-7 Armature short-circuit braking